A smartass is a more vulgar way to say smart mouth, someone who mouths off. If you're a smartass/smart mouth/smart alec, you're someone who talks rudely. An example would be to be talk back with smug or stupid responses, and normally smartasses are kids who decide they can say whatever they want to adults, but that's not the only type of smartass, it's just the most common type of smartass.
Mother: Son, please brush your teeth.
Son: I already did it last night, so I don't need to.
Mother: Son, please brush your teeth! You still have to do it!
Son: Well, it's a free country, so I don't have to do what you say.
Mother: Stop being such a smartass or you can go to your room.
by I'mVeryStupid November 20, 2017
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1. A person that can sit on an ice cream cone and tell you what flavor it is.
"Wat are you, some kinda smartass?"
by Stinky Weezleteats July 08, 2014
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A dumbass who thinks hes smart.
Thomas: Damn, im hungry.
Jeffrie: Actually your not hungry, your brain thinks your hungry because of pressure in the atmoshere. So your wrong and im right. Also its "I Am" hungry not im hungry.
Thomas: Stop being a smartass.
by Hello?itsme March 11, 2017
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A person that always says the most witty comebacks ever. They seize the moment with humorous insults. Smartasses usually speak Fluent sarcasm
Smart ads: your so stupid you tried to put M&MS In alphabetical order
You: ......
Smatass: the only reason I'm such a smartass is cause your such a dumbss
by Eden953 June 18, 2015
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Someone who possesses superior intellect and wit and understands the reason behind and the purpose for satire in life.
She always knows when to insert humor to make him laugh, even when he’s bummin’. She’s such a smartass.
by alwaysattitude January 14, 2010
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N. A person who indiligently tries to provoke your thoughts, concerns, ideas, and opinions by arguing and becoming outspoken on their own part.

N. A very outspoken person

Adj. A word describing someone under a description of a smartass

Aaron Littlefield is smartass enough to have earned a spot on Urban Dictionary. Congratulations, you smartass!
by UIK555 February 19, 2009
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That prick who always takes everything literal and uses sarcasm as his only way of creating humor.
Alaa: "Murphy, stop drawing dicks over my math book and piss off!"

Murphy: Ok. *Makes pissing sounds and walks backwards whilst moving his hips side to side inappropriately*

Alaa: Bloody Smartass..
by AlaaBrah August 01, 2008
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